PDF malware analysis — malicious · 97f2cd51b3cdca30

MALICIOUS

PDF

45.2 KB Created: 2020-08-06 04:05:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: abc9aac0f63301cb362f1d55f863d455 SHA-1: b23548d3de859c7301bbd21e12685a5974fc3ebb SHA-256: 97f2cd51b3cdca3096acbd9cab98f038cdc5f310d2fb4e4c1fde654512fb94d9

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm and a direct link to a known malicious redirector, disguised with a lure of a '12th zoology practical manual pdf 2020'. The ML classifier strongly flagged this PDF as malicious. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or exploits.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://ttraff.ru/pify?keyword=12th+zoology+practical+manual+pdf+2020
- http://files.gracekuchmusic.com/uploads/1/3/1/4/131453559/jeboli-devumewu.pdf
- http://files.miortuk-alaskan-husky-kennel.com/uploads/1/3/1/0/131070476/sepid.pdf
- http://files.tidewatersoaring.org/uploads/1/3/1/4/131437834/1683387.pdf
- http://lotofag.footballinmyblood.com/uploads/1/3/0/7/130776485/posexasadowipal.pdf
- http://files.kegcreeksales.com/uploads/1/3/2/6/132683014/3714673.pdf
- https://cdn.shopify.com/s/files/1/0429/7513/3859/files/betowiw.pdf
- https://cdn.shopify.com/s/files/1/0433/7998/2492/files/budux.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/17721531589.pdf
- https://cdn.shopify.com/s/files/1/0440/2115/3957/files/derevamefizo.pdf
- https://cdn.shopify.com/s/files/1/0428/1463/6198/files/88252987170.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefiwi.pdf
- https://cdn.shopify.com/s/files/1/0439/4637/7374/files/besotedotukutapape.pdf
- https://cdn.shopify.com/s/files/1/0429/6058/4870/files/cambridge_pet_speaking_test_sample.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zorosibal.pdf
- https://cdn.shopify.com/s/files/1/0431/6885/8272/files/10836947291.pdf
- https://cdn.shopify.com/s/files/1/0433/7847/5162/files/34648525563.pdf
- https://cdn.shopify.com/s/files/1/0429/2149/2643/files/xogolepizipekeju.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006386.bin` `c46fb9034f398d9bf3c1ead5e9306e0ed9b807544ec9d8d2f22eb15ca50c99b9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6386	5540 bytes
`font_01_sfnt_off0000763a.bin` `282de1566b698d849e8ea071f126aaa55452436947ee9ee5d7105a5421f13ca0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x763A	10388 bytes
`font_02_sfnt_off000099ba.bin` `1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x99BA	4324 bytes

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